Preparation of a conjugated tautomer of 1,14:7,8-Diethenotetrapyrido[2,1-6-de:2′,1′-6′-gh:2”,1”,6”-k1:2”’,1”’,6”’-na][1,3,5,8,10,12,]hexaazacyclotetradecine and its metal derivatives was written by Ogawa, Shojiro;Yamaguchi, Tomonobu;Gotoh, Nobuyuki. And the article was included in Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999) in 1974.Electric Literature of C12H7BrN2 This article mentions the following:
The title tetradecine (I) with high thermal stability, was prepared by 2,9-diamino-1,10-phenanthroline thermolysis or condensation with 2,9-dihalo-1,10-phenanthroline. The structure of I was a conjugated system related to porphin and phthalocyanine. The metal complexes II-IV were prepared In the experiment, the researchers used many compounds, for example, 2-Bromo-1,10-phenanthroline (cas: 22426-14-8Electric Literature of C12H7BrN2).
2-Bromo-1,10-phenanthroline (cas: 22426-14-8) belongs to organobromine compounds. Bromine is more electronegative than carbon (2.9 vs 2.5). Consequently, the carbon in a carbon–bromine bond is electrophilic, i.e. alkyl bromides are alkylating agents. Bromine-containing agents predominate because not only are they more efficient than similar chlorine-containing species, but also the high atomic weight of bromine ensures that it is present in a high mass fraction within most organobromine compounds.Electric Literature of C12H7BrN2
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary